Hello to all I understand that I could improve the performance of my iMac by emptying the cache. I see under Safari you have that option in the Safari drop down menu. Are there any other "caches" I should be looking to empty? I'm running OS X 10.6.4 on an iMac with a 3.06 GHz Intel Core 2 Duo. Thanks for any advice. I'm trying to learn as much as I can.